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AR-15 Parts Diagram: A Comprehensive Guide
Understanding the various components of an AR-15 rifle is crucial for both new and experienced shooters. This guide will delve into the different parts of an AR-15, providing you with a detailed look at each component and its function. Whether you’re looking to build your own rifle or simply want to know more about the inner workings of this popular firearm, this article will serve as a valuable resource.
Receiver
The receiver is the central part of the AR-15 rifle, serving as the frame that holds all the other components together. It is typically made of aluminum or steel and is available in various calibers, such as .223 Remington, 5.56 NATO, and .308 Winchester. The receiver is where the magazine is inserted, and it also houses the bolt carrier group, which is responsible for cycling the rounds.
Bolt Carrier Group (BCG)
The bolt carrier group is a critical component of the AR-15 rifle, as it is responsible for the cycling of rounds. It consists of several parts, including the bolt, carrier, gas key, and firing pin. When the trigger is pulled, the bolt carrier group moves forward, extracting the spent casing, chambering a new round, and then moving backward to cock the hammer and prepare for the next shot.
Barrel
The barrel is the tube through which the bullet travels before exiting the rifle. It is typically made of stainless steel or chrome-molybdenum and is available in various lengths and calibers. The barrel’s rifling pattern determines the bullet’s spin and trajectory, which can affect accuracy and performance. The barrel also includes a chamber, which holds the primer and powder charge, and a muzzle, which is where the bullet exits the rifle.
Gas System
The gas system is responsible for controlling the amount of gas that is bled from the barrel to cycle the action of the rifle. It consists of the gas block, gas tube, and gas key. The gas block is attached to the barrel and houses the gas tube, which is connected to the bolt carrier group. The gas key is a locking piece that secures the gas tube to the receiver.
Handguard
The handguard is the part of the rifle that covers the barrel and provides a place for the shooter to hold the rifle. It is typically made of aluminum, polymer, or carbon fiber and is available in various lengths and designs. The handguard also houses the magazine well and may include features such as M-LOK slots for attaching accessories.
Stock
The stock is the part of the rifle that is used to support the shooter’s shoulder and absorb recoil. It is typically made of aluminum, polymer, or wood and is available in various lengths and designs. The stock can be adjusted to fit the shooter’s preferences and may include features such as a QD (quick-detachable) sling mount or an adjustable cheek rest.
Trigger Group
The trigger group is responsible for the firing of the rifle. It consists of the trigger, hammer, sear, and disconnect. When the trigger is pulled, the hammer strikes the primer, igniting the powder charge and propelling the bullet down the barrel. The trigger group is adjustable for weight and pull length, allowing the shooter to customize the feel of the trigger.
Magazine
The magazine is the container that holds the rounds of ammunition. It is inserted into the magazine well of the receiver and is held in place by a magazine catch. The magazine is available in various capacities and designs, and it is important to choose a magazine that is compatible with your rifle and ammunition.
Accessories
There are numerous accessories available for the AR-15 rifle, including sights, scopes, lasers, flashlights, and more. These accessories can enhance the rifle’s performance and make it more versatile for various shooting scenarios. It is important to choose accessories that are compatible with your rifle and that meet your specific needs.
Understanding the different parts of an AR-15 rifle is essential for anyone who owns or is interested in this popular firearm. By familiarizing yourself with each component and its function, you can better maintain and customize your rifle to suit your preferences and needs. Whether you’re a new shooter or an experienced enthusiast, this guide will help you gain a deeper understanding of the AR-15 and its many components.
| Component | Description |
|---|---|
Receiver
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